DE202015104525U1 - Yaw brake device - Google Patents

Abstract

Roll braking device for vehicle trailer (1), comprising a brake unit (13) and a signaling device (20), characterized in that the signaling device (20) has a wireless communication device (25).

Description

The invention relates to a Schlingerbremseinrichtung for a vehicle with the features in the preamble of the main claim.

Such a Schlingerbremseinrichtung is from the EP 1 598 249 A1 and known from practice. The Schlingerbremseinrichtung has a brake unit and a signaling device, which indicates with a LED during commissioning the operational readiness.

The DE 10 2005 025 622 A1 and WO 2013/124 730 A1 deal with electronically controlled operating brake systems equipped with ESP sensors for operating pneumatic brake systems of truck trailers. The GB 2 517 440 A shows a trailer information module with an interface to the access point of such electronic brake operation control.

It is an object of the present invention to provide an improved Schlingerbremstechnik.

The invention solves this problem with the features in the main claim.

The claimed rolling brake technique, i. the roll braking device and the operating method have several advantages. They offer a higher functionality of the rolling brake device which can be better utilized by the driver of the towing vehicle. The driver can be shown the correct operation and possible intervention of the rolling brake device. In addition, further information of the rolling brake device can be transmitted and displayed to the driver or possibly other persons as well. This information can be reacted very quickly and purposefully by the receiver side, in particular by the driver. For this information transmission, a signaling device with a preferably wireless communication device is of particular advantage.

The signaling device can also be used for the detection and transmission of further information of the vehicle trailer. This can be in particular status and / or operating messages. For this purpose, the roll braking device has detection means for states and functions of trailer components and / or the environment. The Schlingerbremstechnik thus receives a multi-functionality and a significantly extended scope of use. The further information may be transmitted via said wireless communication device and / or wired communication and may be externally and / or on the vehicle trailer, e.g. via an LED arrangement.

The Schlingerbremstechnik can be an independent technique that can be implemented on a trailer in the original equipment or retrofitted later. As part of this retrofitting can be retrofitted in a simple manner, the said detection of states and functions of trailer components and / or the environment. This can be done without major interventions on the existing trailer. In particular, no renewed approval of the vehicle trailer is required. In addition, this additional functionality and additional capture can be implemented very cost-effectively and also requires no separate signaling and communication technology.

The wireless communication device preferably operates on a wireless basis, in particular Bluetooth, and can cooperate with mobile display devices, in particular smartphones or tablets, which are already present in the user. In these cases, the user only needs a suitable portable software, especially an app. Otherwise, the normal functionality of this display device, e.g. Navigation services, music playback, etc. are used without hindrance. Priority state or danger messages of the extended skid brake technique can be superimposed on this normal operation and prominently displayed, e.g. via a pop-up window. A display can be made by optical and / or acoustic means.

In the subclaims further advantageous embodiments of the invention are given.

The invention is illustrated by way of example and schematically in the drawings. In detail show:

1 : A vehicle trailer with a roll braking device and a towing vehicle shown broken off,

2 : A plan view of the chassis of the vehicle trailer according to arrow II of 1 .

3 FIG. 4 is an enlarged plan view and a detailed view of the rolling brake device, FIG.

4 : An enlarged and broken plan view of the drawbar area of the vehicle trailer and

5 and 6 : Screen images of a mobile display device.

The invention relates to a rolling brake device ( 2 ) for a vehicle trailer ( 1 ) as well as an associated operating procedure.

The vehicle trailer ( 1 ) is in 1 shown schematically. He has a chassis ( 3 ) with one or more axes ( 8th ) with wheels. The chassis ( 3 ) carries a structure, such as a box or flatbed body, especially a caravan structure. The chassis ( 3 ) consists of two or more parallel side members and optionally one or more cross members, which preferably each consist of multi-folded metal profiles, in particular steel profiles exist.

Alternatively, other materials and types of chassis ( 3 ) possible.

Furthermore, the chassis ( 3 ) at the front a drawbar ( 7 ) on. This is preferably designed as a rigid drawbar. This may be a V-drawbar as in the embodiments shown or a pipe drawbar or the like. At the front drawbar end is a trailer hitch ( 4 ) arranged, for example, is designed as a ball head coupling. Furthermore, on the chassis ( 3 ) an extendable support wheel ( 12 ) and a holder with chocks (not shown) may be arranged.

The vehicle trailer ( 1 ) has one or more braking devices ( 5 . 6 ) and the following described Schlingerbremseinrichtung ( 2 ) on. The braking device ( 5 ) is designed as a service brake, eg as overrun brake or electrically operated brake. The braking device ( 6 ) may be a parking brake device, in particular a hand brake device.

The braking devices ( 5 . 6 ) act via a brake transmission device ( 10 ), eg a brake linkage or a brake cable, on brake cables ( 11 ) connected to the wheel brakes ( 9 ) on the wheels. The brake transmission device ( 10 ) and the brake cables ( 11 ) can have an in 2 and 3 illustrated balance beams to be interconnected.

The rolling brake device ( 2 ) has a brake unit ( 13 ) for damping the rolling movements and a signaling device ( 20 ) on. The rolling brake device ( 2 ), in particular its brake unit ( 13 ), can at any suitable point of the vehicle trailer ( 1 ) can be arranged. Preferably, it is located on an axis ( 8th ) and is here via a bracket ( 19 ) attached. The brake unit ( 13 ) is in this case, for example, in the direction of travel or pulling behind the axis ( 8th ) arranged.

The rolling brake device ( 2 ) is equipped with a power supply, in particular power supply of the vehicle trailer ( 1 ) connected. The energy can be in drive from the towing vehicle ( 32 ) can be supplied via the power cable or in stand via an external line. Furthermore, an energy store, in particular a battery or a rechargeable battery can be present.

The brake unit ( 13 ) may be formed in any suitable manner and acts on the wheel brakes ( 9 ) in likewise arbitrarily suitable manner.

In the embodiment shown, the brake unit ( 13 ) a controllable drive, in particular an electric motor, with an actuating rod which presses against the balance beam from behind and thereby the brake cables (FIG. 11 ) and attracts. This action is controlled or regulated and depending on the by means of a sensor ( 14 ) detected rolling movements. When decaying or ending the Schlingererscheinungen the brake unit ( 13 ) are reduced or deactivated, the springs in the wheel brakes ( 9 ) the brake cables ( 11 ) and move the balance beam to the starting position.

The rolling brake device ( 2 ) can be used independently of the service brake ( 5 ) act. The anti-roll braking actions may be the normal service brake ( 5 ) are superimposed without this being pressed. In the exemplary embodiment shown, for example, the balance beam can be activated upon activation of the roll braking device (FIG. 2 ) on the brake transmission device ( 10 ) are pushed along.

The brake unit ( 13 ) includes a sensor system ( 14 ) for the detection of rolling movements. This may comprise one or more sensors, eg ESP sensors, yaw rate sensors, acceleration sensors or the like. The sensor or sensors are at a suitable location of the vehicle trailer ( 1 ), eg on the housing of the brake unit ( 13 ) and / or at another remote location on the chassis ( 3 ). Furthermore, the brake unit ( 13 ) a controller ( 18 ) on. This is preferably in the housing of the brake unit ( 13 ) integrated. It can for example be arranged on the drive.

The signaling device ( 20 ) is used for the transmission of signals and information of the Schlingerbremseinrichtung ( 2 ). It is for this purpose with the controller ( 18 ) connected.

The signaling device ( 20 ) transmits on the one hand information of the rolling brake device ( 2 ), in particular the brake unit ( 13 ). This can be, for example, information about the operational readiness and about the lane-related response and possibly switching off the brake unit ( 13 ) or other status or operational messages. Furthermore, can the control ( 18 ) have a program for fault diagnosis and the diagnostic results via the signaling device ( 20 ). Otherwise, other information of the Schlingerbremseinrichtung ( 2 ) or the brake unit ( 13 ) are signaled.

The signaling device ( 20 ) may also be used to transmit further information from the vehicle trailer ( 1 ) be formed. This information can be in particular status or operating messages. You can use one or more components of the vehicle trailer ( 1 ) affect.

For the detection of this information, the Schlingerbremseinrichtung ( 2 ) a detection device ( 15 ) for states and functions of trailer components. With the detection device ( 15 ) may alternatively or additionally the environment of the vehicle trailer ( 1 ). The detection device ( 15 ) has one or more sensors ( 16 . 17 ) on.

The sensor (s) ( 16 ) is / are provided for detecting conditions or operation of vehicle components. This can eg according to 1 a sensor ( 16 ) on the vehicle wheel, which measures the tire pressure. Another sensor ( 16 ) can according to 2 on a wheel brake ( 9 ) and detect the brake pad wear. Furthermore, according to 1 a sensor ( 16 ) on the trailer hitch ( 4 ) and detect the correct Ankuppelzustand. Another sensor ( 16 ) on the support wheel ( 12 ) can detect its proper receipt of the rest position for the car journey. Another and unillustrated sensor may be disposed on a chock holder and detect whether the chocks for driving operation have been properly removed from the wheels and inserted into the holder. Further and not shown sensors, the operational readiness or operability of a braking device ( 5 . 6 ) or their components. This can eg also the brake temperature at the wheel brakes ( 9 ) affect. Furthermore, parking supports and their rest or operating position can be detected by means of sensors. One or more sensors ( 16 ) can also detect the trailer weight, maintenance intervals or the like. The above list of detection possibilities and the sensors used for this ( 16 ) is not exhaustive and can be extended, especially with regard to trailer construction.

The detection device ( 15 ) may alternatively or additionally include one or more sensors ( 17 ) for detecting the environment of the vehicle trailer ( 1 ) exhibit. This can be eg in 1 illustrated parking sensor ( 17 ) at the rear of the vehicle and / or on the sides of the vehicle, for example, the distance to any obstacles in the range of motion of the vehicle trailer ( 1 ) detected. Another and unillustrated sensor ( 17 ) can be designed as a camera, in particular as an electronic and digital measuring camera, and at a suitable point of the vehicle trailer ( 1 ), eg in the rear area, under the structure or the like. Be arranged. The said sensors ( 16 . 17 ) can also be present several times.

The signaling device ( 20 ) has a preferably wireless communication device ( 25 ) on. It is used for wireless communication with one or more off-board displays ( 22 ). The communication preferably takes place by radio, in particular Bluetooth. Alternatively or additionally, other wireless communication techniques, for example by infrared or the like. Possible.

The vehicle-external display ( 22 ) may be formed in different ways. It may include, for example, a mobile display device, in particular a smartphone or a tablet. Another form of an off-vehicle display ( 22 ) may be, for example, a mobile or fixed navigation device of the towing vehicle ( 32 ) be. Another possibly mobile display device can be designed as a remote control.

The display of the aforementioned information of the Schlingerbremseinrichtung ( 2 ), the vehicle trailer ( 1 ) and / or the trailer environment can be done in any suitable way. This is preferably done visually via a monitor ( 28 ) of the ad ( 22 ), in particular the mobile display device ( 24 ). Alternatively or additionally, an acoustic, for example by loudspeaker, or possibly a haptic display, for example by vibration, possible.

The communication device ( 25 ) has a vehicle-side wireless communication unit ( 26 ) on. This is with the controller ( 18 ) connected.

The wireless communication unit ( 26 ) has at least one transmission unit for a unidirectional communication with the vehicle-external display ( 22 ) on. This in turn has a wireless communication unit comprising at least one receiving unit.

In another and not shown embodiment, the trailer-side communication unit ( 26 ) also have a receiving unit for bidirectional communication. The vehicle-external display ( 22 ) or another signal generator may then include a wireless transmitter unit. This can be determined by the vehicle-external display ( 22 ) or another unit signals, eg interrogation or operating commands or other information or control commands to the controller ( 18 ) be returned. About this can be, for example the roll braking device ( 2 ) remote control. This can be done for test purposes or for other reasons and possibly also while driving in teamwork or maneuvering.

The communication device ( 25 ) also includes portable software for the display device ( 22 ) and its data processing unit. This can be in particular an app for a smartphone, a tablet or the like. With the portable software, the transmitted said information can be processed, in particular evaluated and displayed.

The signaling device ( 20 ), a trailer-side display ( 21 ) for information, in particular about conditions and functions, of the roll braking device ( 2 ) and / or trailer components and / or the environment.

Such a trailer-side display ( 21 ) can eg according to 1 and 4 on the chassis ( 3 ), in particular on the drawbar ( 7 ) can be arranged. A trailer-side display can be one or more display devices ( 23 ). This can be, for example, light sources, in particular LEDs. Such a display device ( 23 ), in particular an LED, can be multifunctional and allow the emission of different signals. This can be done, for example, by a light modulation, in particular continuous light and a flashing, possibly also with different rhythms. The communication of the trailer-side display ( 21 ) or the display device ( 23 ) with the controller ( 18 ) can be wired. In another and not illustrated embodiment is also a wireless communication using the said communication unit ( 26 ) possible.

The detection device ( 15 ) or one or more sensors ( 16 . 18 ) is / are in the shown embodiments with the controller ( 18 ), which in turn communicate with the signaling device ( 20 ), in particular their wireless communication unit ( 26 ) or a wired communication unit. Alternatively, the detection device ( 15 ) and / or their sensors ( 16 . 17 ) with the signaling device ( 20 ), in particular their wireless communication unit ( 26 ), be directly connected.

5 and 6 clarify the signals from the signaling device ( 20 ) by means of the vehicle-external display ( 22 ) transmitted information. In the drawings, the monitor ( 28 ) of a mobile display device ( 24 ), in particular a smartphone or a tablet.

The portable software, especially the app, on the display device ( 24 ) generates one or more masks ( 29 ) on the monitor ( 28 ) are displayed. The masks ( 29 ) contain variable information, in particular status and warning information.

In 5 For example, the normal state is shown where the one or more masks ( 29 ) Status or operating messages of the rolling brake device ( 2 ) and said one or more trailer components optically transmit. In the left-hand column of rectangular fields, for example, the relevant information sources, ie the roll braking device ( 2 ) or parts thereof or the trailer components. If necessary, numerical values or other information, eg the current tire pressure value, a brake temperature or the like, may be indicated in the column arranged to the right. In the right-hand column with the round symbols, simplified status messages or standby messages with a green or red symbol can be transmitted. Another field of the mask ( 29 ) may, for example, contain information about a help function, operating instructions, additional information, etc. The representation, number and division of the masks ( 29 ) can be compared to the example of 5 vary. In addition, acoustic accompanying information, such as announcements, warning sounds or the like, may be present.

6 shows the monitor of 5 in a special operating situation of the vehicle trailer ( 1 ), especially when centrifugal movements occur. In this case, warning information ( 31 ), which is contained, for example, in a pop-up window which displays the normal state information ( 30 ) in the mask ( 29 ) superimposed. In addition, an audible warning signal can occur. The warning information ( 31 ) may have colored and figurative warning symbols and possibly an accompanying text or other information content.

Via the portable software, in particular App, may possibly also another of the signaling device ( 20 ) transmitted information is displayed. This can be eg a picture or other information of the sensor (s) ( 17 ), eg a static or moving camera image, a distance symbol of the parking sensor or the like.

In the case of a bidirectional communication and a control facility for the Schlingerbremseinrichtung ( 2 ) and / or possibly the trailer components, can be displayed on the monitor ( 28 ) or by means of another input unit on the display device ( 24 ) an input, in particular a command input, take place. The display ( 28 ) For this purpose, for example, be designed as a touch screen and show a corresponding other mask with controls.

Variations of the embodiments shown and described are possible in various ways. In particular, the features of the various embodiments and the variants mentioned can be combined with each other and optionally also replaced.

Modifications are particularly with regard to the vehicle trailer ( 1 ) and its trailer components possible. In the embodiments shown, a mechanical brake system with drum brakes or possibly also disc brakes is shown. Alternatively, a hydraulically actuated brake system may be present, wherein the brake devices ( 5 . 6 ) and the brake transmission device ( 10 ) are changed accordingly. In addition, the structural design of the brake unit ( 13 ) and their action on the hydraulically operated wheel brakes ( 9 ) adjusted accordingly.

LIST OF REFERENCE NUMBERS

1

 car trailers

2

 Yaw brake device

3

 chassis

4

 trailer hitch

5

 Brake device, service brake, overrun brake

6

 Braking device, handbrake device

7

 shaft

8th

 axis

9

 wheel brake

10

 Brake transmission device, brake linkage

11

 Brake Cables

12

 stabilizer

13

 brake unit

14

 Sensors, rolling sensor technology

15

 detector

16

 Sensor for vehicle registration

17

 Sensor for environmental detection

18

 control

19

 bracket

20

 signaling device

21

 Display on the trailer side

22

 Display external to vehicle, transient

23

 Indicator, LED

24

 Display device, smartphone, tablet

25

 Communication device wirelessly

26

 Communication unit to skid brake

27

 Communication unit to display device

28

 monitor

29

 mask

30

 state information

31

 warning information

32

 towing vehicle

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• EP 1598249 A1 [0002]
• DE 102005025622 A1 [0003]
• WO 2013/124730 A1 [0003]
• GB 2517440 A [0003]

Claims (37)

Roll braking device for vehicle trailers ( 1 ), with a brake unit ( 13 ) and a signaling device ( 20 ), characterized in that the signaling device ( 20 ) a wireless communication device ( 25 ) having. Rolling brake device according to claim 1, characterized in that the rolling brake device ( 2 ) for a vehicle trailer ( 1 ) with a braking device ( 5 . 6 ), in particular a preferably run-up-operated service brake, is provided and constructed, wherein the roll braking device ( 2 ) a separate brake unit ( 13 ) with a controllable drive and a sensor system ( 14 ) for detecting rolling movements. Rolling brake device according to claim 1 or 2, characterized in that the own brake unit ( 13 ) of the roll braking device ( 2 ) is provided and adapted to a mechanically or hydraulically operated brake system with wheel brakes ( 9 ) of the vehicle trailer ( 1 ). Roll braking device according to claim 1, 2 or 3, characterized in that the rolling brake device ( 2 ) is provided and designed independently of a service brake ( 5 ) of the vehicle trailer ( 1 ), with roll braking actions of the normal service brake ( 5 ) can be superimposed without this being pressed. Rolling brake device according to the preamble of claim 1 or any one of claims 1 to 4, characterized in that the signaling device ( 20 ) for the transmission of information, in particular status and / or operational messages, the roll braking device ( 2 ), and further information from the vehicle trailer ( 1 ) and / or its environment is formed. Rolling brake device according to one of the preceding claims, characterized in that the further information of the vehicle trailer ( 1 ) Status and / or operating messages of trailer components, in particular wheel brakes ( 9 ), Tires, trailer hitch ( 4 ), Braking device ( 5 . 6 ), Jockey wheel, wheel chocks, park supports or the like are. Rolling brake device according to one of the preceding claims, characterized in that the communication device ( 25 ) for the wireless communication, in particular by radio, with a vehicle-external, preferably non-stationary display ( 22 ) is trained. Rolling brake device according to one of the preceding claims, characterized in that the vehicle-external display ( 22 ) a mobile display device ( 24 ), in particular a smartphone or tablet. Rolling brake device according to one of the preceding claims, characterized in that the communication device ( 25 ) a vehicle-side preferred wireless communication unit ( 26 ) having. Rolling brake device according to one of the preceding claims, characterized in that the vehicle-side communication unit ( 26 ) with the controller ( 18 ) of the roll braking device ( 2 ) connected is. Rolling brake device according to one of the preceding claims, characterized in that the communication unit ( 26 ) has a transmitting unit and possibly a receiving unit for a unidirectional or bidirectional communication. Rolling brake device according to one of the preceding claims, characterized in that the vehicle-side communication unit ( 26 ) in a housing ( 33 ) of the roll braking device ( 2 ), in particular its brake unit ( 13 ) is arranged. Rolling brake device according to one of the preceding claims, characterized in that the communication device ( 25 ) portable software, in particular an APP, for the display device ( 24 ) having. Rolling brake device according to one of the preceding claims, characterized in that the portable software, in particular APP, one or more masks ( 29 ) with variable information, in particular status and warning information, on a monitor ( 28 ) of the display device ( 24 ) generates and displays. Roll braking device according to one of the preceding claims, characterized in that the rolling brake device ( 2 ) a detection device ( 15 ) for states and / or functions of trailer components and / or for the environment. Roll braking device according to one of the preceding claims, characterized in that the detection device ( 15 ) with a controller ( 18 ) of the roll braking device ( 2 ) or with the signaling device ( 20 ), in particular the vehicle-side wireless communication unit ( 26 ), is technically connected. Roll braking device according to one of the preceding claims, characterized in that the detection device ( 15 ) one or more sensors ( 16 ), in particular for detecting brake lining wear, brake temperature, tire pressure, support wheel position, parking supports, service and / or parking brake, chocks, trailer weight, maintenance intervals or the like. Roll braking device according to one of the preceding claims, characterized in that the detection device ( 15 ) one or more sensors ( 17 ) for environmental detection, in particular parking sensors, camera (s) or the like., Has. Rolling brake device according to one of the preceding claims, characterized in that the signaling device ( 20 ) a trailer-side display ( 21 ) for states and functions of trailer components and / or the environment. Roll braking device according to one of the preceding claims, characterized in that the trailer-side display ( 21 ) one or more display devices ( 23 ), in particular LEDs. Rolling brake device according to one of the preceding claims, characterized in that a display device ( 23 ), in particular LED, multifunctional for the emission of different signals, in particular by light modulation, is formed. Roll braking device according to one of the preceding claims, characterized in that the rolling brake device ( 2 ) is designed to be retrofitted. Vehicle trailer with a roll braking device ( 2 ), Characterized in that the roll brake device ( 2 ) is formed according to at least one of claims 1 to 22. Trailer according to claim 23, characterized in that the trailer-side display ( 21 ) for conditions and functions of trailer components and / or the environment on the chassis ( 3 ), in particular on the drawbar ( 7 ) is arranged. Vehicle trailer according to claim 23 or 24, characterized in that the roll braking device ( 2 ) on an axis ( 8th ) of the vehicle trailer ( 1 ) is arranged. Vehicle trailer according to claim 23, 24 or 25, characterized in that the roll braking device ( 2 ) with a power supply of the vehicle trailer ( 1 ) connected is. Vehicle trailer according to one of claims 23 to 26, characterized in that the vehicle trailer ( 1 ) a support wheel ( 12 ) with a sensor ( 16 ) having. Vehicle trailer according to one of claims 23 to 27, characterized in that the vehicle trailer ( 1 ) Wheels with a sensor ( 16 ) for detecting a brake pad wear and / or a tire pressure. Vehicle trailer according to one of claims 23 to 28, characterized in that the vehicle trailer ( 1 ) a sensor ( 17 ) for detecting the vehicle environment, in particular a parking sensor and / or a camera has. Vehicle trailer according to one of claims 23 to 29, characterized in that the vehicle trailer ( 1 ) a braking device ( 5 . 6 ) and a mechanically or hydraulically operated brake system with wheel brakes ( 9 ) having. Vehicle trailer according to one of claims 23 to 30, characterized in that the braking device ( 5 ) is designed as a service brake, in particular as overrun brake or as an electrically operated brake. Vehicle trailer according to one of claims 23 to 31, characterized in that the braking device ( 5 ) is formed as a parking brake device, in particular hand brake device. Vehicle trailer according to one of claims 23 to 32, characterized in that the braking device ( 5 . 6 ) via a brake transmission device ( 10 ), in particular a brake linkage or a brake cable together with brake cables ( 11 ), on wheel brakes ( 9 ) acts on the wheels. Vehicle trailer according to one of claims 23 to 33, characterized in that the brake transmission device ( 10 ) and the brake cables ( 11 ) are connected via a balance beam. Vehicle trailer according to one of claims 23 to 34, characterized in that the brake unit ( 13 ) on an axis ( 8th ) of the vehicle trailer ( 1 ), in particular seen in the direction of travel or pulling on the rear side of the axle ( 8th ) is arranged. Signal device for vehicle trailers ( 1 ) with a braking device ( 5 . 6 ), in particular a preferably run-up-operated service brake, and an additional roll braking device ( 2 ) with its own brake unit ( 13 ) with a controllable drive and with a sensor system ( 14 ) for the detection of rolling movements, characterized in that the signaling device ( 20 ) a wireless communication device ( 25 ) with a vehicle-side wireless communication unit ( 26 ) housed in a housing ( 33 ) of the roll braking device ( 2 ) is arranged. Signaling device according to claim 36, characterized in that the vehicle-side wireless communication unit ( 26 ) with the rolling brake device ( 2 ), in particular their control ( 18 ), and with a detection device ( 15 ) and / or with their sensors ( 16 . 17 ) for detecting states and / or functions of trailer components and / or the environment of the vehicle trailer ( 1 ) connected is.

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